RemoteTextureHostWrapper.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef MOZILLA_GFX_RemoteTextureHostWrapper_H

#define MOZILLA_GFX_RemoteTextureHostWrapper_H

#include "mozilla/layers/TextureHost.h"

#include "mozilla/Monitor.h"

namespace mozilla::layers {

// This class wraps TextureHost of remote texture.

// mRemoteTexture holds TextureHost of mTextureId.

class RemoteTextureHostWrapper : public TextureHost {

 public:

  static RefPtr<TextureHost> Create(const RemoteTextureId aTextureId,

                                    const RemoteTextureOwnerId aOwnerId,

                                    const base::ProcessId aForPid,

                                    const gfx::IntSize aSize,

                                    const TextureFlags aFlags);

  void DeallocateDeviceData() override {}

  gfx::SurfaceFormat GetFormat() const override;

  already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override {

    return nullptr;

  gfx::YUVColorSpace GetYUVColorSpace() const override;

  gfx::ColorDepth GetColorDepth() const override;

  gfx::ColorRange GetColorRange() const override;

  gfx::IntSize GetSize() const override;

  bool IsValid() override;

#ifdef MOZ_LAYERS_HAVE_LOG

  const char* Name() override { return "RemoteTextureHostWrapper"; }

#endif

  void CreateRenderTexture(

      const wr::ExternalImageId& aExternalImageId) override;

  uint32_t NumSubTextures() override;

  void PushResourceUpdates(wr::TransactionBuilder& aResources,

                           ResourceUpdateOp aOp,

                           const Range<wr::ImageKey>& aImageKeys,

                           const wr::ExternalImageId& aExtID) override;

  void PushDisplayItems(wr::DisplayListBuilder& aBuilder,

                        const wr::LayoutRect& aBounds,

                        const wr::LayoutRect& aClip, wr::ImageRendering aFilter,

                        const Range<wr::ImageKey>& aImageKeys,

                        PushDisplayItemFlagSet aFlags) override;

  bool SupportsExternalCompositing(WebRenderBackend aBackend) override;

  void UnbindTextureSource() override;

  void NotifyNotUsed() override;

  RemoteTextureHostWrapper* AsRemoteTextureHostWrapper() override {

    return this;

  TextureHostType GetTextureHostType() override;

  bool IsWrappingSurfaceTextureHost() override;

  bool NeedsDeferredDeletion() const override;

  AndroidHardwareBuffer* GetAndroidHardwareBuffer() const override;

  bool IsReadyForRendering();

  void ApplyTextureFlagsToRemoteTexture();

  const RemoteTextureId mTextureId;

  const RemoteTextureOwnerId mOwnerId;

  const base::ProcessId mForPid;

  const gfx::IntSize mSize;

 protected:

  RemoteTextureHostWrapper(const RemoteTextureId aTextureId,

                           const RemoteTextureOwnerId aOwnerId,

                           const base::ProcessId aForPid,

                           const gfx::IntSize aSize, const TextureFlags aFlags);

  virtual ~RemoteTextureHostWrapper();

  void MaybeCreateRenderTexture();

  // Called only by RemoteTextureMap

  TextureHost* GetRemoteTextureHost(const MonitorAutoLock& aProofOfLock);

  // Called only by RemoteTextureMap

  void SetRemoteTextureHost(const MonitorAutoLock& aProofOfLock,

                            TextureHost* aTextureHost);

  void ClearRemoteTextureHost(const MonitorAutoLock& aProofOfLock);

  // Updated by RemoteTextureMap

//

  // Hold compositable ref of remote texture's TextureHost that is used for

  // building WebRender display list. It is TextureHost of mTextureId.

  CompositableTextureHostRef mRemoteTexture;

  bool mRenderTextureCreated = false;

  friend class RemoteTextureMap;

};

}  // namespace mozilla::layers

#endif  // MOZILLA_GFX_RemoteTextureHostWrapper_H